LIGHT EMITTING TYPE CAPACITIVE TOUCH SENSOR

摘要

A light emitting type capacitive touch sensor is provided to have a reduced overall size and incur a low unit cost according to the recent users' demands by removing the necessity of an additional disposition of a capacitive sensing pad. An electronic light emitting sheet(130) is disposed at a lower portion of a keypad(110), and emits light according to an electrical signal transmitted from an electronic device to serve as a backlight of the keypad. A PCB(Printed Circuit Board)(150) is disposed at a lower portion of the electronic light emitting sheet. Capacitive sensing patterns(112) are formed on one surface of the keypad, sense a change in capacitance of the electronic device resulting from an operation of a user as the user touches the keypad, and transfer a corresponding sensing signal to the PCB.